/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package multiface.kooper.servlet;

import it.sauronsoftware.base64.Base64;
import java.io.IOException;
import java.io.PrintWriter;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.persistence.Query;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import multiface.kooper.jpa.User;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *
 * @author Diego64
 */
@WebServlet(name = "Login", urlPatterns = {"/Login"})
public class Login extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    private static Log log = LogFactory.getLog(Login.class);

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("KooperPU");
        EntityManager em = emf.createEntityManager();
        HttpSession s = request.getSession();
        try {
            out.print("<p>" + request.getParameter("email") + "</p>");
            out.print("<p>" + request.getParameter("password") + "</p>");
            String psw64 = Base64.encode(request.getParameter("password"));
            out.print("<p>" + psw64 + "</p>");
            Query q = em.createNativeQuery("SELECT u.* FROM user u WHERE u.email=? AND u.password=?", User.class);
            q.setParameter(1, request.getParameter("email"));
            q.setParameter(2,psw64);
            
            User u = (User)q.getSingleResult();
            
            if (u != null) {
                s.setAttribute("user", u);
                out.print("yes");
                response.sendRedirect("page");
            } else {
                out.print("no");
            }
        } catch (Exception ex) {
            out.print("no");
            log.error(ex);
        } finally {
            out.close();
            em.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
